Hi,   data aa;   input a b;   c = b - a;   if c = 6.3;   datalines;   2.9 9.2 ; run;     Mathematically c should have been 6.3 (9.2 - 2.9), however, the above code is giving zero observation as the results is not equal to 6.3 at some decimal level.   I have tried the same code for the following differences and similar issues were observed. 2.01 - 1.02 5.4 - 4.5 ...   Have anyone faced similar issues?   ... View more